- The title is a reference to the catchphrase-scream of Shaggy Rogers in Scooby-Doo.
- The threatening notes are a homage to I Know What You Did Last Summer.
- When Jeff and Klaus go out the hallway and notice the repeating picture frames on the wall, Dr. Weitzman remarks how they buy them in bulk. This is in reference to Hanna-Barbera's cost-cutting strategy of repeating backgrounds during character walk cycles. [1]
- When Hayley questions how Bullock is able to not have a pulse when disguised as Agent Wolfman, he attributes the Wim Hof Method, in reference to a regimen created by extreme athlete Wim Hof. [2]
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